 
(* ::Section:: *)
(* FCGetDimensions *)
(* ::Text:: *)
(*FCGetDimensions[expr] is an auxiliary function that determines the dimensions in which 4-momenta and Dirac matrices of the given expression are defined. The result is returned as a list, e.g. ${4}$, ${D}$ or ${4,D,D-4}$ etc. This is useful if one wants to be sure that all quantities inside a particular expression are purely $4$-dimensional or purely $text{D}$-dimensional..*)


(* ::Subsection:: *)
(* Examples *)
FCGetDimensions[GA[i]]

FCGetDimensions[GSD[p]]

FCGetDimensions[FVE[q,\[Mu]]GS[p]]
